package com.sky.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    @Autowired
    UserMapper userMapper;
    @Autowired
    private WeChatProperties weChatProperties;
    public static final String wxLoginUrl="http://api.weixin.qq.com/sns/jscode2session";
    /**
     * 微信登录
     * @param loginDTO
     * @return
     */
    @Override
    public User wxlogin(UserLoginDTO loginDTO) {
        //调用接口服务获取openid
        Map<String,String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("grant_type","authorization_code");
        map.put("js_code",loginDTO.getCode());

        String json= HttpClientUtil.doGet(wxLoginUrl,map);
        JSONObject jsonObject = JSONObject.parseObject(json);
        String openId=jsonObject.getString("openid");
        //判断openid
        if (openId==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        User user=userMapper.getByOpenId(openId);
        //判断当前用户是否为新用户，从数据表里查
        if (user==null){
            user=User.builder().openid(openId).createTime(LocalDateTime.now()).build();
            userMapper.insert(user);
        }
        return user;
    }
}
